Cylinder-head and method of manufacturing same



R. E. COLLINS.

CYLINDER HEAD AND METHOD OF MANUFACTURING SAME.

APPLICATION FILED APR.24 1920- Patented Aug. 2, 1921.

UNITED STATES RALPH E. COLLINS, OF INDIANAPOLIS, INDIANA.

CYLINDER-HEAD AND METHOD OF MANUFACTURING SAME.

Specification-of Letters Patent.

Patented A11 2, 1921.

Application filed April 24, 1920. Serial No. 376,230.

T 0 all whom it may concern: I

Be it known that I, RALPH E. COLLINS, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Cylinder-Heads andMethods of Manufacturing Same, of which the following is aspecification.

This invention relates to a cylinder head for internal combustionengines, and the general object of the invention is to provide acylinder head of the above character which can be placed upon the marketas a merchantable article of trade to be sold to the public; and made indifferent styles and shapes to fit engines of different manufacturers;and which can readily be placed into operative position by persons oflimited mechanical skill without the use of special tools andappliances.

A further object of the invention consists in the provision of amerchantable cylinder head. as a complete article of manufacture, inwhich the liability of overheating is largely overcome, so thatpremature congealing or thickening of the oil, which ultimately resultsin the formation of accumulated carbon deposit, is greatly retarded.

I accomplish the above objects of the invention, and such others as mayappear from a perusal of the following description and claims, by meansof the construction illustrated in the accompanying drawings, forming apart hereof, in which Figure 1 is a top or plan view of my improvedcylinder head for internal combustion engines. Fig. 2 is a view partlyin side elevation and partly in longitudinal section, on the line 2-2 inF 1. Fig. 3 is a transverse section on the line 3-3 in Fig. 2.

Referring to the drawings the cylinder head comprises an integrallyformed unit member 10 of suliicient width and length to close the openends of the several cylinders of the engine, whether these comprise fouror twelve in number, which head is composed of metal of a characterusually employed in the manufacture of cylinder heads. Head 10 issecurely attached to the cylinder block in the usual way by means ofbolts which pass through the openings 11, and these openings registerwith the threaded holes in the cylinder block for the attachment ofusual individual cylinder heads. 12 represents the openings forreceiving the spark plugs. Head 10 is provided on its upper surface witha series of longitudinally disposed integral ribs or fins 15, which asshown in Fig. 2, extend some distance above the upper surface of head10. Ribs 15'are arranged so as to provide intervening channels 16 forthe passage of air, and the ribs are slightly tapered and arranged tobring their thinnest parts adjacent the end of the head where the airdischarges from channels 16. This construction of ribs 15 increases thewidth of the channels 16 as they approach their discharge ends andassists in overcoming the frictional resistance and resultingretardation in the movement of the air imposed by the surface area ofuniformly formed ribs. This tapering of ribs 15 removes in whole or inpart sluggishness or retardation in the movement of the air throughchannels 16, so that a greater amount of air is induced to travelthrough channels 16 in a given period of time than would otherwiseobtain, and which results in removing and carrying away acorrespondingly larger amount of heat from the cylinder head, andpromoting a condition which greatly retards the formation andaccumulation of carbon, than prevails in the conventional types ofcylinder heads in common use.

The device is so simple that further description thereof is deemedunnecessary.

Having thus fully described my said invention, what I desire to secureby Letters Patent, is

1. As anarticle of manufacture a cylinder head for internal combustionengines comprising a single unit member having a plurality of thinintegrally formed ribs arranged longitudinally of the cylinder head toform air passageways, said ribs being tapered from one end to the other.

2. As an article of manufacture a cylinder head for internal combustionengines comprising a unit member having a plurality of comparativelythin ribs extending vertically from its top surface, said ribs taperingin thickness from one end to the other to form intervening airpassageways having their maximum width at their discharge ends, saidhead being provided with suitably located apertures for securing thehead and for attaching the spark plugs.

In witness whereof, I, have hereunto set my hand and seal atIndianapolis, Indiana, this 16th day of April, A. D., one thousand ninehundred and twenty.

RALPH E. COLLINS. [L. 5.]

